Home / 455,215.95-628,449.64-273,972.38

Finding the Fourth Proportional to 455,215.95, 628,449.64 and 273,972.38

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Solution

The fourth proportional to 455,215.95, 628,449.64 and 273,972.38 is: 378,233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,215.95 : 628,449.64 = 273,972.38 : x
  2. Step 2: Convert to fraction form
    455,215.95/628,449.64 = 273,972.38/x
  3. Step 3: Cross multiply
    455,215.95x = 628,449.64 × 273,972.38
  4. Step 4: Simplify right side
    455,215.95x = 172,177,839,753.76
  5. Step 5: Solve for x
    x = 172,177,839,753.76/455,215.95
  6. Step 6: Final answer
    x = 378,233.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.